Physics · 2022
JEE Main · 30 June 2022, Shift 1 · Q48
A source of monochromatic light liberates 9 × 10^20 photon per second with wavelength 600 nm when operated at 400 W. The number of photons emitted…
A source of monochromatic light liberates $\displaystyle 9 \times 10^{20}$ photon per second with wavelength $\displaystyle 600$ nm when operated at $\displaystyle 400$ W. The number of photons emitted per second with wavelength of $\displaystyle 800$ nm by the source of monochromatic light operating at same power will be :
Official answer
(1)
$\displaystyle 12 \times 10^{20}$
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JEE Main 2022 Physics question, with the answer from NTA’s final answer key. Where our answers come from.